Excerpt:Global Tel Link, which supplies California lockups with pay phones, will install technology to disable cellphones, which have been used by inmates to run criminal enterprises, intimidate witnesses and organize attacks on guards.

Prison Cell Phones: The High-Tech Plan To Stop The Use Of Cell Phones By Inmates

5-11-12HUFFINGTON POST By Michael Montgomery

Excerpt:A deal between Gov. Jerry Brown's administration and a private communications company to deploy special equipment to block the rampant use of contraband cell phones by state prison inmates is based on a technology that is unproven and could undermine public safety, according to a new report.